1
|
Romanini M, Macovez R, Valenti S, Noor W, Tamarit JL. Dielectric Spectroscopy Studies of Conformational Relaxation Dynamics in Molecular Glass-Forming Liquids. Int J Mol Sci 2023; 24:17189. [PMID: 38139017 PMCID: PMC10743228 DOI: 10.3390/ijms242417189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/29/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
We review experimental results obtained with broadband dielectric spectroscopy concerning the relaxation times and activation energies of intramolecular conformational relaxation processes in small-molecule glass-formers. Such processes are due to the interconversion between different conformers of relatively flexible molecules, and generally involve conformational changes of flexible chain or ring moieties, or else the rigid rotation of planar groups, such as conjugated phenyl rings. Comparative analysis of molecules possessing the same (type of) functional group is carried out in order to test the possibility of assigning the dynamic conformational isomerism of given families of organic compounds to the motion of specific molecular subunits. These range from terminal halomethyl and acetyl/acetoxy groups to both rigid and flexible ring structures, such as the planar halobenzene cycles or the buckled saccharide and diazepine rings. A short section on polyesters provides a generalisation of these findings to synthetic macromolecules.
Collapse
Affiliation(s)
| | | | | | | | - Josep Lluís Tamarit
- Grup de Caracterització de Materials, Departament de Física and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona East School of Engineering (EEBE), Av. Eduard Maristany 10-14, E-08019 Barcelona, Spain; (M.R.); (R.M.); (S.V.); (W.N.)
| |
Collapse
|
2
|
Kato K, Taniguchi M, Ito K. Tough Glass with Mechanical Bonding Network Anchored by High-Mobility Polymers. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Affiliation(s)
- Kazuaki Kato
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
- Research and Services Division of Materials Data and Integrated System, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Masayuki Taniguchi
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Kohzo Ito
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| |
Collapse
|
3
|
Heczko D, Tarnacka M, Kamiński K, Paluch M, Kamińska E. Breakdown of isochronal superpositioning of α- and β-relaxation times in the van der Waals system – loratadine. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
4
|
Salama A, Mohamed F, Hesemann P. Preparation and dielectric relaxation of a novel ionocellulose derivative. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2021. [DOI: 10.1016/j.carpta.2021.100087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
5
|
Relationships between Molecular Structure of Carbohydrates and Their Dynamic Hydration Shells Revealed by Terahertz Time-Domain Spectroscopy. Int J Mol Sci 2021; 22:ijms222111969. [PMID: 34769399 PMCID: PMC8584907 DOI: 10.3390/ijms222111969] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/26/2021] [Accepted: 11/03/2021] [Indexed: 11/17/2022] Open
Abstract
Despite more than a century of research on the hydration of biomolecules, the hydration of carbohydrates is insufficiently studied. An approach to studying dynamic hydration shells of carbohydrates in aqueous solutions based on terahertz time-domain spectroscopy assay is developed in the current work. Monosaccharides (glucose, galactose, galacturonic acid) and polysaccharides (dextran, amylopectin, polygalacturonic acid) solutions were studied. The contribution of the dissolved carbohydrates was subtracted from the measured dielectric permittivities of aqueous solutions based on the corresponding effective medium models. The obtained dielectric permittivities of the water phase were used to calculate the parameters describing intermolecular relaxation and oscillatory processes in water. It is established that all of the analyzed carbohydrates lead to the increase of the binding degree of water. Hydration shells of monosaccharides are characterized by elevated numbers of hydrogen bonds and their mean energies compared to undisturbed water, as well as by elevated numbers and the lifetime of free water molecules. The axial orientation of the OH(4) group of sugar facilitates a wider distribution of hydrogen bond energies in hydration shells compared to equatorial orientation. The presence of the carboxylic group affects water structure significantly. The hydration of polysaccharides is less apparent than that of monosaccharides, and it depends on the type of glycosidic bonds.
Collapse
|
6
|
Bama JA, Dudognon E, Affouard F. Impact of Low Concentration of Strongly Hydrogen-Bonded Water Molecules on the Dynamics of Amorphous Terfenadine: Insights from Molecular Dynamics Simulations and Dielectric Relaxation Spectroscopy. J Phys Chem B 2021; 125:11292-11307. [PMID: 34590855 DOI: 10.1021/acs.jpcb.1c06087] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The impact of low water concentration of strongly hydrogen-bonded water molecules on the dynamical properties of amorphous terfenadine (TFD) is investigated through complementary molecular dynamics (MD) simulations and dielectric relaxation spectroscopy (DRS) experiments. In this article, we especially highlight the important role played by some residual water molecules in the concentration of 1-2% (w/w) trapped in the TFD glassy matrix, which are particularly difficult to remove experimentally without a specific heating/drying process. From MD computations and analyses of the hydrogen bonding (HB) interactions, different categories of water molecules are revealed and particularly the presence of strongly HB water molecules. These latter localize themselves in small pockets in empty spaces existing in between the TFD molecules due to the poor packing of the glassy state and preferentially interact with the polar groups close to the flexible central part of the TFD molecules. We present a simple model which rationalizes at the molecular scale the effect of these strongly HB water molecules on dynamics and how they give rise to a supplementary relaxation process (namely process S) which is detected for the first time in the glassy state of TFD annealed at room temperature while this process is completely absent in a non-annealed glass. It also explains how this supplementary relaxation is coupled with the intramolecular motion (namely process γ) of the very flexible central part of the TFD molecule. The present findings help to understand more generally the microscopic origin of the secondary relaxations often detected by DRS in the glassy states of molecular compounds for which the exact nature is still debated.
Collapse
Affiliation(s)
- Jeanne-Annick Bama
- University Lille, CNRS, INRAE, Centrale Lille, UMR 8207-UMET-Unité Matériaux et Transformations, Lille F-59000, France
| | - Emeline Dudognon
- University Lille, CNRS, INRAE, Centrale Lille, UMR 8207-UMET-Unité Matériaux et Transformations, Lille F-59000, France
| | - Frédéric Affouard
- University Lille, CNRS, INRAE, Centrale Lille, UMR 8207-UMET-Unité Matériaux et Transformations, Lille F-59000, France
| |
Collapse
|
7
|
Prokhorov E, Luna-Barcenas G, Kumar-Krishnan S, Mauricio Sánchez R, Castillo Reyes B, Hernández Vargas J. Probing molecular interactions of polysaccharides in the presence of water. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
8
|
Zhao H, Chen Z, Du X. Evolution of Dielectric Behavior of Regenerated Cellulose Film during Isothermal Dehydration Monitored in Real Time via Dielectric Spectroscopy. Polymers (Basel) 2019; 11:E1749. [PMID: 31653038 PMCID: PMC6918449 DOI: 10.3390/polym11111749] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/22/2019] [Accepted: 10/23/2019] [Indexed: 02/06/2023] Open
Abstract
The dielectric relaxation behavior of a regenerated cellulose (RC) film during isothermal dehydration was monitored in real time via dielectric spectroscopy, in order to investigate on one hand the influence of water on its dynamics and the variation of microstructure and phase composition during dehydration on the other. The progression of water loss is clearly revealed by the evolution of the dielectric relaxation behavior with drying time, which suggests two distinctly different drying stages separated by a striking transition period. The dielectric relaxation behavior at the first drying stage is found overwhelmingly dominated by ionic motion, and that at the second stage is basically a result of molecular dynamics. The mechanisms of these relaxations are proposed, through which the influence of water on the dynamics of the RC film and the variation of the microstructure and phase composition of the film at different hydration state are discussed in detail. An interesting finding is that highly ordered but noncrystalline arrangement of cellulose molecules exists, but it can be formed only when the film is in specific hydration state. This study demonstrates that dielectric spectroscopy is an effective tool in real-time monitoring kinetic process.
Collapse
Affiliation(s)
- Hao Zhao
- School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei 230036, China.
| | - Zhen Chen
- Department of Applied Chemistry, School of Science, Anhui Agricultural University, Hefei 230036, China.
- School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei 230036, China.
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China.
| | - Xianfeng Du
- School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei 230036, China.
| |
Collapse
|
9
|
On the Experimental Assessment of the Molecular-Scale Interactions between Wood and Water. FORESTS 2019. [DOI: 10.3390/f10080616] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Although molecular-scale wood-water interactions needed for moisture-durability can lead to the accelerated development of moisture-durable products, these interactions are often experimentally elusive. In this perspective, the topic’s state of the art understanding will be discussed, excluding computational work. Recent research efforts based on infrared spectroscopy methods have provided new insights in terms of the accessibility of the wood polymers and moisture-induced polymer dynamics. Likewise, neutron scattering and nuclear magnetic relaxometry experiments have shown that bound water can be found within more than one local environment inside the cell wall. However, a majority of the experiments have focused on studying extracted or derived polymers instead of unmodified wood. Thus, in this paper some of the questions that still need to be addressed experimentally will also be highlighted.
Collapse
|
10
|
Zhao H, Chen Z, Du X, Chen L. Contribution of different state of adsorbed water to the sub-Tg dynamics of cellulose. Carbohydr Polym 2019; 210:322-331. [DOI: 10.1016/j.carbpol.2019.01.087] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 01/21/2019] [Accepted: 01/24/2019] [Indexed: 12/01/2022]
|
11
|
Heczko D, Kamińska E, Minecka A, Tarnacka M, Waliłko P, Kasprzycka A, Kamiński K, Paluch M. Studies on the molecular dynamics of acetylated oligosaccharides of different topologies (linear versus cyclic). Carbohydr Polym 2018; 206:273-280. [PMID: 30553322 DOI: 10.1016/j.carbpol.2018.10.118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/12/2018] [Accepted: 10/31/2018] [Indexed: 10/27/2022]
Abstract
In this paper, the molecular dynamics and thermal properties of representative acetylated linear and cyclic oligosaccharides: acTRE, acRAF, acSTA, ac-α-CD, ac-β-CD, ac-γ-CD, have been investigated by using broadband dielectric spectroscopy and differential scanning calorimetry. We found that there are marked differences in the dynamics of the structural and secondary relaxation processes in both groups of materials. Just to mention a variation in the distribution of the structural relaxation times as well as different evolutions of the glass transition temperature (Tg) and fragility (m) versus molecular weight (Mw), which seem to be affected by the shape of the molecule, strain in the carbohydrate ring and mobility of side acetyl moieties.
Collapse
Affiliation(s)
- Dawid Heczko
- Department of Pharmacognosy and Phytochemistry, Medical University of Silesia in Katowice, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, ul. Jagiellonska 4, 41-200 Sosnowiec, Poland.
| | - Ewa Kamińska
- Department of Pharmacognosy and Phytochemistry, Medical University of Silesia in Katowice, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, ul. Jagiellonska 4, 41-200 Sosnowiec, Poland.
| | - Aldona Minecka
- Department of Pharmacognosy and Phytochemistry, Medical University of Silesia in Katowice, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, ul. Jagiellonska 4, 41-200 Sosnowiec, Poland
| | - Magdalena Tarnacka
- Silesian Center for Education and Interdisciplinary Research, University of Silesia, ul. 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland; Institute of Physics, University of Silesia, ul. 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - Patrycja Waliłko
- Silesian Technical University of Technology, Department of Chemistry, ul. Krzywoustego 4, 44-100 Gliwice, Poland; Biotechnology Centre, Silesian Technical University of Technology, ul. Krzywoustego 8, 44-100 Gliwice, Poland
| | - Anna Kasprzycka
- Silesian Technical University of Technology, Department of Chemistry, ul. Krzywoustego 4, 44-100 Gliwice, Poland; Biotechnology Centre, Silesian Technical University of Technology, ul. Krzywoustego 8, 44-100 Gliwice, Poland
| | - Kamil Kamiński
- Silesian Center for Education and Interdisciplinary Research, University of Silesia, ul. 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland; Institute of Physics, University of Silesia, ul. 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - Marian Paluch
- Silesian Center for Education and Interdisciplinary Research, University of Silesia, ul. 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland; Institute of Physics, University of Silesia, ul. 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| |
Collapse
|
12
|
Norcino LB, de Oliveira JE, Moreira FK, Marconcini JM, Mattoso LH. Rheological and thermo-mechanical evaluation of bio-based chitosan/pectin blends with tunable ionic cross-linking. Int J Biol Macromol 2018; 118:1817-1823. [DOI: 10.1016/j.ijbiomac.2018.07.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/02/2018] [Accepted: 07/08/2018] [Indexed: 11/25/2022]
|
13
|
A Study of Moisture Sorption and Dielectric Processes of Starch and Sodium Starch Glycolate : Theme: Formulation and Manufacturing of Solid Dosage Forms Guest Editors: Tony Zhou and Tonglei Li. Pharm Res 2017; 34:2675-2688. [PMID: 28875274 DOI: 10.1007/s11095-017-2252-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Accepted: 08/28/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE This study explored the potential of combining the use of moisture sorption isotherms and dielectric relaxation profiles of starch and sodium starch glycolate (SSG) to probe the location of moisture in dried and hydrated samples. METHODS Starch and SSG samples, dried and hydrated, were prepared. For hydrated samples, their moisture contents were determined. The samples were probed by dielectric spectroscopy using a frequency band of 0.1 Hz to 1 MHz to investigate their moisture-related relaxation profiles. The moisture sorption and desorption isotherms of starch and SSG were generated using a vapor sorption analyzer, and modeled using the Guggenheim-Anderson-de Boer equation. RESULTS A clear high frequency relaxation process was detected in both dried and hydrated starches, while for dried starch, an additional slower low frequency process was also detected. The high frequency relaxation processes in hydrated and dried starches were assigned to the coupled starch-hydrated water relaxation. The low frequency relaxation in dried starch was attributed to the local chain motions of the starch backbone. No relaxation process associated with water was detected in both hydrated and dried SSG within the frequency and temperature range used in this study. The moisture sorption isotherms of SSG suggest the presence of high energy free water, which could have masked the relaxation process of the bound water during dielectric measurements. CONCLUSION The combined study of moisture sorption isotherms and dielectric spectroscopy was shown to be beneficial and complementary in probing the effects of moisture on the relaxation processes of starch and SSG.
Collapse
|
14
|
Minecka A, Kamińska E, Tarnacka M, Dzienia A, Madejczyk O, Waliłko P, Kasprzycka A, Kamiński K, Paluch M. High pressure studies on structural and secondary relaxation dynamics in silyl derivative of D-glucose. J Chem Phys 2017; 147:064502. [DOI: 10.1063/1.4989679] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
|
15
|
Wang M, Li X, Guo Y, Wu T, Liu YD, Ngai KL, Wang LM. A new secondary relaxation in the rigid and planar 1-methylindole: Evidence from binary mixture studies. J Chem Phys 2016; 145:214501. [DOI: 10.1063/1.4968564] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Meng Wang
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Xiangqian Li
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Yuxing Guo
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Tao Wu
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Ying Dan Liu
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - K. L. Ngai
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
- CNR-IPCF, Largo B. Pontecorvo 3, Pisa I-56127, Italy
| | - Li-Min Wang
- State Key Laboratory of Metastable Materials Science and Technology and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| |
Collapse
|
16
|
Tedeschi C, Leuenberger B, Ubbink J. Amorphous–amorphous phase separation in hydrophobically-modified starch–sucrose blends I. Phase behavior and thermodynamic characterization. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.02.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
17
|
Kuttich B, Grefe AK, Kröling H, Schabel S, Stühn B. Molecular mobility in cellulose and paper. RSC Adv 2016. [DOI: 10.1039/c6ra01320a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We study the dielectric relaxation in paper of different density and in microcrystalline cellulose in a broad temperature range. Quantitatively changes induced by confinement and orientation due to the processing into cellulose fibres are found.
Collapse
Affiliation(s)
- Björn Kuttich
- Experimental Condensed Matter Physics
- TU Darmstadt
- Germany
| | | | - Henri Kröling
- Fachgebiet Papierfabrikation und Mechanische Verfahrenstechnik
- TU Darmstadt
- Germany
| | - Samuel Schabel
- Fachgebiet Papierfabrikation und Mechanische Verfahrenstechnik
- TU Darmstadt
- Germany
| | - Bernd Stühn
- Experimental Condensed Matter Physics
- TU Darmstadt
- Germany
| |
Collapse
|
18
|
Li X, Wang M, Liu R, Ngai KL, Tian Y, Wang LM, Capaccioli S. Secondary relaxation dynamics in rigid glass-forming molecular liquids with related structures. J Chem Phys 2015; 143:104505. [DOI: 10.1063/1.4930262] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Xiangqian Li
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Meng Wang
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Riping Liu
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Kia L. Ngai
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
- CNR-IPCF, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - Yongjun Tian
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Li-Min Wang
- State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Simone Capaccioli
- CNR-IPCF, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
- Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
| |
Collapse
|
19
|
Cecotka A, Tripathy SN, Paluch M. Evidence of pressure induced intermolecular proton transfer via mutarotation: the case of supercooled d-fructose. Phys Chem Chem Phys 2015; 17:19394-400. [PMID: 26144525 DOI: 10.1039/c5cp02044a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This paper describes a systematic investigation on the role of pressure in mutarotation kinetics of supercooled d-fructose using dielectric spectroscopy. The structural relaxation time acts as a suitable dynamical observable to monitor the mutarotation process that enables the construction of the kinetic curves. The reaction kinetic shapes have been analyzed using the Avrami model. At low temperature, sigmoidal kinetic curves are noted, which correspond to the high concentration of furanosidic forms. The magnitude of activation energy of the process significantly decreases with increasing pressure and is comparable to the solvated systems at 100 MPa. A potential connection between cooperative motion and the origin of intermolecular proton transfer via mutarotation at elevated pressure is also discussed. These experimental observations have fundamental significance on theoretical explanation of the mechanism involving mutarotation in sugars.
Collapse
Affiliation(s)
- Adam Cecotka
- Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland.
| | | | | |
Collapse
|
20
|
Kanungo I, Fathima NN, Jonnalagadda RR, Nair BU. Go natural and smarter: fenugreek as a hydration designer of collagen based biomaterials. Phys Chem Chem Phys 2015; 17:2778-93. [DOI: 10.1039/c4cp04363d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and convenient strategy to design the solvation network of collagen, using fenugreek has been investigated. This can be explored for the smart biomaterial applications.
Collapse
Affiliation(s)
- Ivy Kanungo
- Chemical Laboratory
- Council of Scientific and Industrial Research-Central Leather Research Institute
- Chennai 600020
- India
| | - Nishter Nishad Fathima
- Chemical Laboratory
- Council of Scientific and Industrial Research-Central Leather Research Institute
- Chennai 600020
- India
| | - Raghava Rao Jonnalagadda
- Chemical Laboratory
- Council of Scientific and Industrial Research-Central Leather Research Institute
- Chennai 600020
- India
| | - Balachandran Unni Nair
- Chemical Laboratory
- Council of Scientific and Industrial Research-Central Leather Research Institute
- Chennai 600020
- India
| |
Collapse
|
21
|
Miscibility and dynamical properties of cellulose acetate/plasticizer systems. Carbohydr Polym 2014; 116:95-102. [PMID: 25458277 DOI: 10.1016/j.carbpol.2014.07.078] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 06/24/2014] [Accepted: 07/28/2014] [Indexed: 11/21/2022]
Abstract
Due to its biodegradability and renewability, a great interest has been devoted to investigating cellulose acetate in order to expand its potential applications. In addition, secondary cellulose acetate (CDA) could also be considered as a model system for strongly polar polymer system. The dynamical behavior of CDA is supposed to be governed by H-bonding and dipolar interaction network. Due to their high glass transition temperature, cellulose acetate-based systems are processed when blended with plasticizers. It is thus of utmost importance to study the miscibility and plasticizing effects of various molecules. We prepared CDA films via solvent casting method with diethyl phthalate as the plasticizer. Miscibility diagrams were established by calorimetry and thermo-mechanical (DMTA) experiments. Dynamical properties were analyzed by DMTA and broadband dielectric spectroscopy. We could identify the α-relaxation of these CDA-plasticizer systems in the frequency range from 0.06 Hz to 10(6)Hz, which allowed for describing the dynamics in the so-called Williams-Landel-Ferry/Vogel-Fulcher-Tammann regime.
Collapse
|
22
|
Kanungo I, Fathima NN, Jonnalagadda RR, Unni Nair B. Elucidation of hydration dynamics of locust bean gum–collagen composites by impedance and thermoporometry. Carbohydr Polym 2014; 103:250-60. [DOI: 10.1016/j.carbpol.2013.12.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 12/09/2013] [Accepted: 12/14/2013] [Indexed: 10/25/2022]
|
23
|
Kishikawa Y, Seki Y, Shingai K, Kita R, Shinyashiki N, Yagihara S. Dielectric Relaxation for Studying Molecular Dynamics of Pullulan in Water. J Phys Chem B 2013; 117:9034-41. [DOI: 10.1021/jp403606r] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuki Kishikawa
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Yuki Seki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Kou Shingai
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Rio Kita
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Naoki Shinyashiki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Shin Yagihara
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| |
Collapse
|
24
|
Pethrick RA, Song M. Dielectric studies of amylose, amylopectin and amylose–stearic acid complexes. Carbohydr Polym 2013; 92:1530-8. [DOI: 10.1016/j.carbpol.2012.09.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 08/20/2012] [Accepted: 09/24/2012] [Indexed: 11/25/2022]
|
25
|
|
26
|
Kaminski K, Adrjanowicz K, Kaminska E, Grzybowska K, Hawelek L, Paluch M, Tarnacka M, Gruszka I, Kasprzycka A. Impact of water on molecular dynamics of amorphous α-, β-, and γ-cyclodextrins studied by dielectric spectroscopy. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2012; 86:031506. [PMID: 23030922 DOI: 10.1103/physreve.86.031506] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Indexed: 06/01/2023]
Abstract
Dielectric, calorimetric, and x-ray diffraction measurements were carried out on α-, β-, and γ-cyclodextrins, which are cyclic saccharides built by, respectively, six, seven, and eight glucose units connected via glycosidic linkage. Differential scanning calorimetry measurements indicated that each carbohydrate has a melting temperature located much above the temperature at which thermal decomposition begins. Moreover, calorimetric data revealed that it is possible to completely dehydrate each cyclodextrin by annealing them above 413 K. Unfortunately, it is impossible to obtain amorphous forms of cyclodextrin by simple cooling of the melt. Thus, a solid state amorphization method has been applied. X-ray diffraction studies demonstrated that by ball milling at room temperature we are able to obtain completely amorphous cyclodextrins. Finally, dielectric measurements were carried out to probe molecular dynamics in the amorphous state of cyclodextrins. It was found that there is only one relaxation process in amorphous hydrated cyclodextrins, while in dried samples two secondary relaxations are present. Moreover, we have shown that water has an enormous effect on the dynamics of both relaxation modes, i.e., with increasing content of water, the activation energy of the slow mode decreases, while that evaluated for the fast mode increases. We were not able to follow the dynamics of the structural relaxation process, because glass transition temperatures of amorphous cyclodextrins were found to lie above thermal degradation points.
Collapse
Affiliation(s)
- K Kaminski
- Institute of Physics, Silesian University, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Kaminski K, Adrjanowicz K, Zakowiecki D, Kaminska E, Wlodarczyk P, Paluch M, Pilch J, Tarnacka M. Dielectric Studies on Molecular Dynamics of Two Important Disaccharides: Sucrose and Trehalose. Mol Pharm 2012; 9:1559-69. [DOI: 10.1021/mp2004498] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. Kaminski
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - K. Adrjanowicz
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - D. Zakowiecki
- Preformulation Department R&D, Pharmaceutical Works Polpharma SA, Pelplinska 19, 83-200 Starogard Gdanski, Poland
| | - E. Kaminska
- Department
of Pharmacognosy and
Phytochemistry, Medical University of Silesia, ul. Jagiellonska 4,
41-200 Sosnowiec, Poland
| | - P. Wlodarczyk
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - M. Paluch
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - J. Pilch
- Department of Biological Sciences
Academy of Physical Education, Raciborska 1, 40-074 Katowice, Poland
| | - M. Tarnacka
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| |
Collapse
|
28
|
Pagnotta SE, Alegría A, Colmenero J. Dynamical behavior of highly concentrated trehalose water solutions: a dielectric spectroscopy study. Phys Chem Chem Phys 2012; 14:2991-6. [DOI: 10.1039/c2cp22402j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
29
|
Kobaisi MA, Murugaraj P, Mainwaring DE. Origin and influence of water-induced chain relaxation phenomena in chitosan biopolymers. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/polb.23023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
30
|
Broadband dielectric spectroscopy and calorimetric investigations of d-lyxose. Carbohydr Res 2011; 346:2165-72. [DOI: 10.1016/j.carres.2011.06.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Revised: 06/16/2011] [Accepted: 06/21/2011] [Indexed: 11/24/2022]
|
31
|
Kaminski K, Wlodarczyk P, Hawelek L, Adrjanowicz K, Wojnarowska Z, Paluch M, Kaminska E. Comparative dielectric studies on two hydrogen-bonded and van der Waals liquids. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2011; 83:061506. [PMID: 21797371 DOI: 10.1103/physreve.83.061506] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Indexed: 05/31/2023]
Abstract
Broadband dielectric measurements were performed in a wide range of temperatures on glucose, maltose, and their acetyl derivatives. We have indicated that molecular dynamics above and below the glass transition temperature differ considerably for the hydrogen-bonded and van der Waals systems. We have shown that structural relaxation dispersions of D-glucose and maltose are broader than those obtained for peracetyl carbohydrates. Moreover, glass transition temperatures of the former systems are much higher than for the latter ones. In the glassy state of both glucose and its acetyl derivatives only one well-separated secondary relaxation process was identified. In the case of maltose and peracetyl maltose a completely different situation was observed. In the former carbohydrate two secondary modes were detected, whereas in the latter one only a faster relaxation process was visible in the glassy state. This finding is discussed in greater detail on the basis of density functional theory calculations.
Collapse
Affiliation(s)
- K Kaminski
- Institute of Physics, University of Silesia, Katowice, Poland
| | | | | | | | | | | | | |
Collapse
|
32
|
Sharifi S, Capaccioli S, Lucchesi M, Rolla P, Prevosto D. Temperature and pressure dependence of secondary process in an epoxy system. J Chem Phys 2011; 134:044510. [PMID: 21280751 DOI: 10.1063/1.3518972] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Dielectric spectroscopy as a function of temperature and pressure was used to study the secondary relaxation in poly [(phenyl glycidyl ether)-co-formaldehyde] at hydrostatic pressure up to 600 MPa and at different temperatures between 315 and 243 K. From the analysis of the isothermal measurements, we observe that the activation volume of the secondary relaxation has nonmonotonic temperature dependence with a maximum at the temperature of the glass transition at ambient pressure. An interpretation in terms of mean hole volume dispersion is proposed based on literature data. Moreover, from isobaric data, we studied the effect of pressure on activation entropy and enthalpy of the secondary relaxation evidencing its local nature but also the presence of a certain complexity of the motion, which supports the idea that this process reflects the motion of a large part of the molecule.
Collapse
Affiliation(s)
- Soheil Sharifi
- Dipartimento di Fisica, Università di Pisa, Largo B. Pontecorvo 3, 1-56127 Pisa, Italy
| | | | | | | | | |
Collapse
|
33
|
Sudo S. Dielectric Properties of the Free Water in Hydroxypropyl Cellulose. J Phys Chem B 2010; 115:2-6. [DOI: 10.1021/jp104950q] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Seiichi Sudo
- Department of Physics, Tokyo City University, Tamazutsumi, Setagaya, Tokyo 158-8557, Japan
| |
Collapse
|
34
|
Nunes TG, Diogo HP, Pinto SS, Moura Ramos JJ. Molecular Dynamics of Amorphous Gentiobiose Studied by Solid-State NMR. J Phys Chem B 2010; 114:15976-84. [DOI: 10.1021/jp106371w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Teresa G. Nunes
- Centro de Química Estrutural, Complexo I, IST, TULisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and CQFM (Centro de Química-Física Molecular) and IN (Institute of Nanoscience and Nanotechnology), Instituto Superior Técnico, TULisbon, 1049-001 Lisboa, Portugal
| | - Hermínio P. Diogo
- Centro de Química Estrutural, Complexo I, IST, TULisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and CQFM (Centro de Química-Física Molecular) and IN (Institute of Nanoscience and Nanotechnology), Instituto Superior Técnico, TULisbon, 1049-001 Lisboa, Portugal
| | - Susana S. Pinto
- Centro de Química Estrutural, Complexo I, IST, TULisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and CQFM (Centro de Química-Física Molecular) and IN (Institute of Nanoscience and Nanotechnology), Instituto Superior Técnico, TULisbon, 1049-001 Lisboa, Portugal
| | - Joaquim J. Moura Ramos
- Centro de Química Estrutural, Complexo I, IST, TULisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and CQFM (Centro de Química-Física Molecular) and IN (Institute of Nanoscience and Nanotechnology), Instituto Superior Técnico, TULisbon, 1049-001 Lisboa, Portugal
| |
Collapse
|
35
|
Kaminski K, Wlodarczyk P, Adrjanowicz K, Kaminska E, Wojnarowska Z, Paluch M. Origin of the Commonly Observed Secondary Relaxation Process in Saccharides. J Phys Chem B 2010; 114:11272-81. [DOI: 10.1021/jp1034773] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K. Kaminski
- Institute of Physics, Silesian University, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - P. Wlodarczyk
- Institute of Physics, Silesian University, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - K. Adrjanowicz
- Institute of Physics, Silesian University, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - E. Kaminska
- Institute of Physics, Silesian University, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - Z. Wojnarowska
- Institute of Physics, Silesian University, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - M. Paluch
- Institute of Physics, Silesian University, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| |
Collapse
|
36
|
Sousa M, Brás AR, Veiga HIM, Ferreira FC, de Pinho MN, Correia NT, Dionísio M. Dynamical Characterization of a Cellulose Acetate Polysaccharide. J Phys Chem B 2010; 114:10939-53. [DOI: 10.1021/jp101665h] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Miriam Sousa
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. República, Apart. 127, 2780-901 Oeiras, Portugal, IBB-Institute for Biotechnology and Bioengineering, Centre for Biological and Chemical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and Universidade Técnica de Lisboa, Instituto Superior Técnico, ICEMS/DQEB,
| | - Ana Rita Brás
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. República, Apart. 127, 2780-901 Oeiras, Portugal, IBB-Institute for Biotechnology and Bioengineering, Centre for Biological and Chemical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and Universidade Técnica de Lisboa, Instituto Superior Técnico, ICEMS/DQEB,
| | - Helena Isabel M. Veiga
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. República, Apart. 127, 2780-901 Oeiras, Portugal, IBB-Institute for Biotechnology and Bioengineering, Centre for Biological and Chemical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and Universidade Técnica de Lisboa, Instituto Superior Técnico, ICEMS/DQEB,
| | - Frederico Castelo Ferreira
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. República, Apart. 127, 2780-901 Oeiras, Portugal, IBB-Institute for Biotechnology and Bioengineering, Centre for Biological and Chemical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and Universidade Técnica de Lisboa, Instituto Superior Técnico, ICEMS/DQEB,
| | - Maria Norberta de Pinho
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. República, Apart. 127, 2780-901 Oeiras, Portugal, IBB-Institute for Biotechnology and Bioengineering, Centre for Biological and Chemical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and Universidade Técnica de Lisboa, Instituto Superior Técnico, ICEMS/DQEB,
| | - Natália T. Correia
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. República, Apart. 127, 2780-901 Oeiras, Portugal, IBB-Institute for Biotechnology and Bioengineering, Centre for Biological and Chemical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and Universidade Técnica de Lisboa, Instituto Superior Técnico, ICEMS/DQEB,
| | - Madalena Dionísio
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. República, Apart. 127, 2780-901 Oeiras, Portugal, IBB-Institute for Biotechnology and Bioengineering, Centre for Biological and Chemical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, and Universidade Técnica de Lisboa, Instituto Superior Técnico, ICEMS/DQEB,
| |
Collapse
|
37
|
Wlodarczyk P, Kaminski K, Haracz S, Dulski M, Paluch M, Ziolo J, Wygledowska-Kania M. Kinetic processes in supercooled monosaccharides upon melting: Application of dielectric spectroscopy in the mutarotation studies of D-ribose. J Chem Phys 2010; 132:195104. [DOI: 10.1063/1.3408286] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
38
|
Kaminski K, Kaminska E, Adrjanowicz K, Wojnarowska Z, Wlodarczyk P, Grzybowska K, Dulski M, Wrzalik R, Paluch M. Observation of the dynamics of clusters in d-glucose with the use of dielectric spectroscopy. Phys Chem Chem Phys 2010; 12:723-30. [DOI: 10.1039/b916699h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|